January 2084 lunar eclipse
| Total eclipse | |||||||||||||||||
The Moon's hourly motion shown right to left | |||||||||||||||||
| Date | January 22, 2084 | ||||||||||||||||
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| Gamma | −0.3610 | ||||||||||||||||
| Magnitude | 1.1531 | ||||||||||||||||
| Saros cycle | 135 (27 of 71) | ||||||||||||||||
| Totality | 60 minutes, 32 seconds | ||||||||||||||||
| Partiality | 216 minutes, 16 seconds | ||||||||||||||||
| Penumbral | 362 minutes, 0 seconds | ||||||||||||||||
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A total lunar eclipse will occur at the Moon’s descending node of orbit on Saturday, January 22, 2084, with an umbral magnitude of 1.1531. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 4 days after apogee (on January 18, 2084, at 23:50 UTC), the Moon's apparent diameter will be smaller.
This lunar eclipse will be the third of an almost tetrad, with the others being on February 2, 2083 (total); July 29, 2083 (total); and July 17, 2084 (partial).